Gasoline oxidation rate

Figure 2. Relative oxidation rates of iso-octane, iso-octane/20% xylene, Phillips Naptha and California reformulated gasoline.

The catalyst (0.15 g) was loaded into a quartz tube reactor (internal diameter = 4 mm). The catalyst was pretreated in nitrogen at 400°C. Simulated gasoline reformate was used for the activity test of the catalyst. The composition of the simulated reformate was 36 wt% H2, 17 wt% CO2, 28 wt% N2, 17 wt% H2O, 1 wt% CO, and air was added additionally as the oxidant. The total flow rate was maintained at 100 ml/min. The test was performed over the temperature range of 120 280°C at various flow rates of inlet air. 

It is well known that reactions take place at different rates. Some reactions occur in an instant, while others can be measured in seconds, minutes, and hours. The explosive combustion of gasoline in the cylinder of a car occurs in a fraction of a second. Reactions used to develop film take place over seconds to minutes. Chemical reactions responsible for changing the color of fall leaves take days to weeks, and the oxidation of metals takes place over years. Whenever reactions occur, chemical kinetics play a... 

Physical properties such as adhesion to metals tear resistance, abrasion resistance, resistance to diffusion of gas as well as resistance to dilute and concentrated acids, aliphatic and aromatic hydrocarbons, ketones, oil and gasoline, water absorption, oxidation, ozone, sunlight, heat aging, low temperature and flame of the common elastomers are documented in the literature.114 Rating of elastomers with respect to resistance to the factors cited above are in terms of outstanding, excellent, very good, good, fair and poor. 

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